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Bucks Relicensing ProjectFERC Project No. 619
Reservoir Level Assessment RR-S3(TM-16) Study Results Meeting
February 3, 2016
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Reservoir Level Assessment RR-S3
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Study Goals and Objectives
• Goal: Compile data to evaluate reservoir level effects on recreation.
• Objectives: Evaluate historical reservoir levels.– Map reservoir and identify shallow areas.
– Review boat ramp conditions and boat access.
– Compile and evaluate boat accident data.
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Study Area and Sites
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Methods
• Lake Levels– compile reservoir storage data 1931 - 2013
• Light Detection and Ranging (LiDAR) – 3d photos from fixed-wing aircraft
– GIS contour map
• Boat Launch– evaluate conditions of boat ramps
– evaluate launch suitability at low reservoir levels
• Accident– reports and interviews with Plumas County
Sheriff’s office & Cal Boating
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RESULTS – Historic Lake Levels
Average Daily Reservoir Elevation 1932 -2013
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RESULTS – Average Frequency of Summer Boating Opportunities
Reservoir Elevation Frequency 2004-2013
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RESULTS – LiDAR Bucks Lakeshore Resort
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RESULTS – LiDAR Haskins Boat Launch
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RESULTS – LiDAR Bucks Lake Dam
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RESULTS – Lakeshore Boat Launch
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RESULTS – Bucks Lake Marina Boat Launch
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RESULTS – Haskins Valley Boat Launch
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RESULTS – Sandy Point Boat Launch
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RESULTS – Boating Accidents
Total: Four (4) reported boating accidentsYear: 2001, 2002, 2004, 2013Month: June, July, August, SeptemberDay: Thursday (1), Saturday (2), Sunday (1)Holiday: One accident on holiday weekendTime: 12:00 noon to 2:00 p.m. (1); 4:00 p.m. to 6:00 p.m. (3)Type: Four accidents involved a collision between vesselsCause: Three accidents due to operator inattention, one due to operator
inexperience, and one due to moving at excessive speedVessel: Three motorboats, two jet skis, and two pontoon boatsCounty: About 3,200 vessels registered
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Summary of Results
• No documented accidents related to lake levels
• No documented instances of collisions with obstacles such as rocks or stumps
• Primary issue is access and aesthetics at low lake levels– Bucks Lake is almost always accessible for launching boats Labor
Day to Memorial Day– May and October, lake levels are occasionally lower than usable end
of boat ramps
• Condition of boat ramps maybe an issue– Sediment buildup at Sandy Point– Surface condition of Haskins– Operating season at Haskins
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Remaining Study Elements
• Implementation of the study is considered complete
• Technical Memorandum is considered final – Unless other studies determine that reservoir level affects
other resources.
– If so, Technical Memorandum may be updated, if needed.
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Study Description Variances
• One variance to the FERC-approved study. – The study used four water year types, Critically Dry, Dry,
Normal, and Wet, based on the California Department of Water Resources records of annual inflow to Lake Oroville
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Discussion
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RESULTS – LIDAR Bucks lake Dam
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RESULTS – Reservoir Elevation Frequency May- Oct, Critically Dry
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